Demco. Model E Bedienungsanleitung Instruction manual Mode d emploi Istruzioni d uso Instrucciones para el servicio Инструкция по эксплуатации

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1 Demco Model E Bedienungsanleitung Instruction manual Mode d emploi Istruzioni d uso Instrucciones para el servicio Инструкция по эксплуатации Manufactured by: CMP Industries LLC 413 N. Pearl St. Albany, NY / USA Rev A

2 ENGLISH Demco High-Speed Grinder Model E Original Content Introduction...7 Symbols...7 Instructions for operator 1. Installation and operation Operation Controls Replacing mandrels Adjusting collet Setting spindle speed Cleaning and maintenance Cleaning collet Drive belt replacement Tensioning belt Replacing bulbs Replacing fuses Spare parts Scope of delivery Troubleshooting...10 Owner s Manual A. Area of application A.1 Designated use A.2 Environmental conditions (in accordance with DIN EN ) B. Dangers and warnings C. Approved persons D. Preparing for operation E. Repair...12 F. Specifications...12 G. Limitation of liability...12 Introduction The Demco E96 high-speed grinder is a compact precision grinder for use in dental laboratories. It is used for grinding or cutting dental casts and materials. The grinding body with mandrel is securely fastened in a collet. A lever system in the spindle is used to stop a quick-stop coupling, open the collet and replace the mandrel. The work area is illuminated by two high-intensity bulbs. A tinted eye-protection shield in front of the work area protects the operator from injury. The belt and pulleys are protected by a cover to protect the operator from contact with them during operation. Observe the information on dangers and the warnings in the section Owner s Manual. Instruct the user with this manual on the area of operation, the possible dangers during operation and the operation of the machine. This instruction manual must be accessible to the operator at all times. For more information see the section Owner s Manual Symbols The following symbols are used in this manual and on the machine: Danger Danger of injury Electrical power Danger of electric shock Caution If this instruction is not observed the machine may be damaged Note Gives useful information that makes operation of the machine easier. Disconnect the machine from mains power and remove the plug before opening it. Wear safety glasses Danger Danger of injury to hand. Other symbols are explained as they are used EN

3 Instructions for operator 1. Installation and operation 1. Install the machine on strong, level workbench. 2. Makes sure that the mains voltage conforms to the voltage printed on the grinder name plate. 3. Adjust the safety shield for maximum eye protection. 4. Set both switches to the OFF position. 5. Plug in power plug. The Demco high-speed grinder is now ready for operation. 2. Operation 2.1 Controls (See Figure 1 and Figure 2) A Lever (coupling, brake, clamping lever) B Motor switch C Light switch D Collet E Safety shield F1 Motor fuse (2 pieces) F2 Light fuse 2.2 Replacing mandrels Set motor switch to OFF. Move lever slowly and smoothly from position A (Figure 3) to position B (Figure 4) to uncouple and brake the spindle and to open the collet. Remove mandrel, install new mandrel. Move lever back to position A to close the collet. Do not close the collet without a mandrel in place, otherwise the spindle will bind. Do not actuate brake too fast, otherwise the item being ground may come loose from the mandrel and cause unnecessary wear. The spindle only runs if a mandrel or other tool is positioned in the collet. 2.3 Adjusting collet If the mandrel is loose while the lever is in position A, the collet must be readjusted. Set motor switch to the OFF position. Move lever slowly and smoothly from position A (Figure 3) to position B (Figure 4) to uncouple and brake the spindle and to open the collet. Remove mandrel. Remove collet key from the lever (Figure 5). Rotate collet counterclockwise and remove it (Figure 6). Insert the hex wrench through the spindle nose. Change adjustment (Figure 7): - - loosen: tighten: counterclockwise clockwise Reinstall the collet and tighten it (the collet must be screwed in completely while the lever is in position B ). Replace collet key in lever. Install mandrel and close collet again (lever in position A ). If the collet does not close in this step, replacement of the collet may be necessary (see spare parts list). 2.4 Setting spindle speed The highest speed is always set on delivery. To set the grinder to low the speed: Set motor switch to the OFF position. Unplug power cord. Remove belt cover (Figure 8). Loosen hex wrench (Figure 9). Release belt tension by rotating the spindle (Figure 10). Remove drive belt. Install attached shorter low speed belt onto the outer motor and spindle pulleys. Tension drive belt by rotating the spindle. For the correct belt tension see Chap Tighten hex wrench. Replace belt cover. NEVER operate machine without the belt cover installed! 3. Cleaning and maintenance 3.1 Cleaning collet Daily: remove collet, clean grit off and apply a light film of oil. - Set motor switch to OFF position. - Move lever to position B. - Remove the collet key from the lever (Figure 5). - Rotate collet counterclockwise and remove it (Figure 6). - Clean and oil collet. - Replace collet and tighten it (the collet must be screwed in completely while the lever is in position B ). Apply a light film of oil to the collet only, do not oil any other part of the spindle! EN - 8 -

4 3.2 Drive belt replacement Set motor switch to the OFF position. Pull out power plug. Remove belt cover (Figure 8). Loosen hex wrench (Figure 9). Release tension by rotating the spindle (Figure 10). Replace drive belt. Tension drive belt by rotating the spindle. For the correct belt tension see Chap Tighten hex wrench again. Replace belt cover. NEVER operate machine without the belt cover installed! Use only original drive belts! 3.3 Tensioning belt Incorrect belt tension will cause premature wear of the drive belt, the pulleys and the bearings. Loosen hex wrench (Figure 9). Tension belt by rotating the spindle (Figure 10). Adjust belt tension so the belt can be moved approx. 8 mm up and down. Check the belt tension after operating a new belt for a short time, because new drive belts tend to stretch after operation. 3.5 Replacing fuses Set motor switch to the OFF position. Pull out power plug. Place grinder on one side. Loosen screws and remove bottom plate (Figure 11). Replace faulty fuse (Figure 12): - F1: motor fuses (2 pieces) F2: light fuse - When replacing fuses, only use fuses with the same rating as the original. Refer to the Technical Specifications section. NEVER use fuses with a higher rating! Reinstall the bottom plate. 4. Spare parts See the attached spare parts list for the spare parts numbers. 5. Scope of delivery 1 Demco high-speed grinder 1 drive belt (short, for low speed) 1 instruction manual 1 spare parts list 3.4 Replacing bulbs Before replacing bulbs set the light switch to the OFF position. Use only original bulbs, see spare parts list. Installation of incorrect bulbs may destroy the 24V transformer! EN

5 6. Troubleshooting Fault Cause Remedy Motor does not rotate. No lights Spindle does not rotate when motor is running. Mandrel remains stationary during operation Noisy spindle unit. No mains power. Plug in power plug. Check plug. Check fuses. No mains power. Plug in power plug. Check plug. Check fuses. Lights faulty Replace bulbs Transformer faulty Send machine for repair Mandrel not installed. Install mandrel (see Chap. 2.2) Lever not in position A Move lever to position A (Figure 3). Mandrel damaged. Check collet, replace if necessary. Collet dirty. Clean collet and apply a light film of oil (see Chap. 3.1) Collet rusty or worn. Replace collet Collet not completely screwed Screw collet in completely while lever is in position B (Figure in. 5). Drive belt cracked. Replace drive belt (see Chap. 3.2) Belt too loose. Adjust belt tension (see Chap. 3.3). Spindle bearings faulty Send spindle in for repair. EN

6 Owner s Manual The following instructions are intended to help you as the owner to use the machine safely in your laboratory. Instruct the user with this manual on the area of operation, the possible dangers during operation and the operation of the machine. This instruction manual must be accessible to the operator at all times. A. Area of application A.1 Designated use The Demco E96 high-speed grinder is a compact precision grinding machine for use in dental laboratories. It is used for grinding or cutting dental casts and materials. A.2 Environmental conditions (in accordance with DIN EN ) The machine may be operated only: inside, up to an altitude of 2000 m above sea level, at an ambient temperature of 5-40ºC [41-104ºF] *), at a maximum relative humidity of 80% at 31ºC [87.8ºF], with a linear decrease to 50% relative humidity at 40ºC [104ºF] *), by mains power if the voltage deviations are no greater than 10% of the nominal value, at pollution degree 2, at overvoltage category II, *) The machine can be used at a relative humidity up to 80% between 5 and 30ºC [41-86ºF]. At temperatures of 31-40ºC [87,8-104ºF] the relative humidity must decrease proportionately to ensure proper operation (e.g. at 35ºC [95ºF] = 65% relative humidity, at 40ºC [104ºF] = 50% relative humidity). The machine must not be operated at temperatures above 40ºC [104ºF]. B. Dangers and warnings For inside use only. The machine is designed for use under dry conditions only and must not be used or stored under wet conditions. The machine must be operated with a power cord conforming to national specifications only. The conversion to comply with national regulations must be carried out by an electrician. Check that the information on the name plate conforms to the local voltage. The power plug must be easily accessible. The device must only be connected to receptacles connected to the protective conductor system. Check connector lines and hoses (such as power cord) regularly for damage (e.g. kinks, cracks, porosity) or signs of ageing. Machines with damaged connector lines, hoses or other faults must not be operated. Disconnect the machine from the mains supply before any electrical work. Never operate machine without supervision. NEVER operate machine without belt cover installed! Danger of injury by being caught in the machine. Never work with loose long hair or loose clothing. Wear safety glasses when working with the high-speed grinder! Danger of hand injury by cutting an burning. The rotating tools are sharp and the objects can get hot. Wear appropriate personal protective equipment when working with materials that could endanger health. When working with the machine dust or vapour that may endanger health may be generated. Adjust the required extraction system for the type of dust Switch the machine off after work. C. Approved persons This product is specified for use by persons older than 14 years. The machine must be operated by trained persons only. Repairs to electrical equipment that are not described in this owner s manual must be carried out by an electrician. D. Preparing for operation Before operation for the first time compare the information on the name plate with the local mains voltage. The machine must be connected only to receptacles that are connected to the protective conductor system EN

7 E. Repair Repairs must be conducted by authorized technicians only. Repairs to electrical equipment that is not described in this owner s manual must be carried out by an electrician. F. Specifications Mains voltage: 230 V, 50/60 Hz, 1.5 A Power consumption: 180 W motor fuse: 2x 6,3 A (T) Light fuse: 800 ma (T) Speed: / /min. Cable length: 1 m Spindle: shaft size 2.38 mm Diameter of connection points for external extraction: internal: 58 mm external: 68 mm Dimensions (WxHxD): 275 x 280 x 310 mm Weight: approx kg Lighting: 2x 12 V high-intensity lights G. Limitation of liability CMP Industries LLC will not accept any liability for damages and warranty claims under the following conditions: The product is used for purposes other than those specified in the owner s manual. The product is modified in any way except for the changes described in the owner s manual. The product is repaired by persons who are not authorised technicians or parts are not replaced with original CMP Industries spare parts. The product is used in spite of obvious safety defects or damage. The product is subject to mechanical impact or is dropped. EN All rights reserved

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Katalysator Nr / Katalysator Nr. 2300-0001 / 2300-3001 Bedienungsanleitung Instruction manual Mode d emploi Istruzioni d uso Instrucciones de servicio Инструкция по эксплуатации 取扱説明書 사용설명서 21-6499 15092017 Made in Germany